WHO-TV: Saturday was the day medical marijuana advocates and patients had been waiting for, the first day it was legal to purchase medical cannabis in the state of Iowa. “It’s kind of surreal really, and I think the most exciting thing probably for us is seeing all these people that are benefiting from all the work and need the help,” said Sally Gaer. Sally Gaer and her husband, West Des Moines Mayor Steve Gaer, advocated for years on behalf of their daughter.